Time to lose weight, the question is how?

My friend, and I were talking yesterday. I told her I needed to lose weight, but I just don't know where to start. She said that she had been thinking about ordering some diet pills. I told her that I really didn't think they were safe. She said she was going to order Phentermine and try them. She had checked them out online, and they are safe and easy to use. I told her I hoped it worked out for her.